Return all Windows partitions

disk/disk_windows.go

@@ -80,6 +80,9 @@ func UsageWithContext(ctx context.Context, path string) (*UsageStat, error) {
 }
 
 func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, error) {
+	warnings := common.Warnings{
+		Verbose: true,
+	}
 	var ret []PartitionStat
 	lpBuffer := make([]byte, 254)
 	diskret, _, err := procGetLogicalDriveStringsW.Call(
@@ -94,7 +97,9 @@ func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, erro
 			typepath, _ := windows.UTF16PtrFromString(path)
 			typeret, _, _ := procGetDriveType.Call(uintptr(unsafe.Pointer(typepath)))
 			if typeret == 0 {
-				return ret, windows.GetLastError()
+				err := windows.GetLastError()
+				warnings.Add(err)
+				continue
 			}
 			// 2: DRIVE_REMOVABLE 3: DRIVE_FIXED 4: DRIVE_REMOTE 5: DRIVE_CDROM
 
@@ -118,7 +123,8 @@ func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, erro
 					if typeret == 5 || typeret == 2 {
 						continue // device is not ready will happen if there is no disk in the drive
 					}
-					return ret, err
+					warnings.Add(err)
+					continue
 				}
 				opts := []string{"rw"}
 				if lpFileSystemFlags&fileReadOnlyVolume != 0 {
@@ -138,7 +144,7 @@ func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, erro
 			}
 		}
 	}
-	return ret, nil
+	return ret, warnings.Reference()
 }
 
 func IOCountersWithContext(ctx context.Context, names ...string) (map[string]IOCountersStat, error) {

host/host_linux.go

@@ -395,7 +395,7 @@ func SensorsTemperaturesWithContext(ctx context.Context) ([]TemperatureStat, err
 		}
 	}
 
-	var warns Warnings
+	var warns common.Warnings
 
 	if len(files) == 0 { // handle distributions without hwmon, like raspbian #391, parse legacy thermal_zone files
 		files, err = filepath.Glob(common.HostSys("/class/thermal/thermal_zone*/"))

host/types.go → internal/common/warnings.go

@@ -1,11 +1,10 @@
-package host
+package common
 
-import (
-	"fmt"
-)
+import "fmt"
 
 type Warnings struct {
-	List []error
+	List    []error
+	Verbose bool
 }
 
 func (w *Warnings) Add(err error) {
@@ -20,5 +19,12 @@ func (w *Warnings) Reference() error {
 }
 
 func (w *Warnings) Error() string {
+	if w.Verbose {
+		str := ""
+		for i, e := range w.List {
+			str += fmt.Sprintf("\tError %d: %s\n", i, e.Error())
+		}
+		return str
+	}
 	return fmt.Sprintf("Number of warnings: %v", len(w.List))
 }